A general and efficient protocol was developed for the synthesis of aryl alkyl ethers through metal-free C–OMe bond cleavage under mild reaction conditions. This process displays a wide scope of methoxyarenes and alcohols, including primary, secondary, and tertiary alcohols, as well as natural products, pharmaceuticals, and biologically active alcohols. DFT calculations and experimental results simultaneously
为在温和的反应条件下通过无金属的C-OMe键裂解合成芳基烷基醚,开发了一种通用而有效的方案。该方法显示出广泛的甲氧基芳烃和醇,包括伯,仲和叔醇,以及天然产物,药物和生物活性醇。DFT计算和实验结果同时证实,钾离子通过与腈的结合在甲氧基的活化中起关键作用,并为S N Ar机制提供了支持。
Ln(OTf)<sub>3</sub>-Catalyzed Insertion of Aryl Isocyanides into the Cyclopropane Ring
作者:Armin de Meijere、Vadim Korotkov、Oleg Larionov
DOI:10.1055/s-2006-942514
日期:2006.11
The insertion of two molecules of an aryl isocyanide into bisacceptor-activated cyclopropane derivatives has been observed for the first time. The reaction proceeds best under the catalysis of Pr(OTf)3 and offers a facile access to the synthetically useful and potentially pharmacologically relevant substituted dialkyl 3-(arylamino)-2-(arylimino)cyclopent-3-ene-1,1-dicarboxylates in moderate yields (21-65%).